What tubes does the Davoli UP4 ELL80 use?

The Davoli UP4 ELL80 uses 4× ELL80 power tubes.

When was the Davoli UP4 ELL80 produced?

The Davoli UP4 ELL80 was produced 1965–1973.

Davoli UP4 ELL80 preset

Close · 72/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Davoli UP4 ELL80 is a rare power unit variant using ELL80 double-pentode tubes — dual-section beam tetrodes in a single envelope common in Italian and European television audio circuits. This unusual tube choice gives the UP4 ELL80 a tonal character distinct from the EL34 and EL504 variants, and surviving examples are highly unusual.

Years produced: 1965–1973
Made in: Italy
Channels: 1
Power tubes: 4× ELL80

Tags: vintage.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.